Patent US3826291A successfully refreshed from Google Patents.
US3826291A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dispensing volatile hydrocarbon fuels
Assignee: Mobil Oil AS
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Filing: 1972-12-11
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Granted: 1974-07-30
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Expires: 1992-12-11
Abstract
Abstract Escape of hydrocarbons to the atmosphere during dispensing of volatile hydrocarbon fuels is avoided by pumping vapor from the container to be filled concurrently with introduction to that container of hydrocarbon fuels which contain volatile components. Suitable apparatus for the purpose include a vapor pump driven by the shaft of the meter which operates an indicater of amount of liquid dispensed.
Inventors
- 👤 L Steffens
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 22:38
CPC Classifications
B; B67; B67D; B67D7/00; B67D7/04; B67D7/0476; B67D7/0478; B67D7/048; B67D7/0482
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
260 words
A motor fuel dispensing system for supply of motor fuel to the tank of an automotive vehiCle while inhibiting discharge of hydrocarbon vapor to the atmosphere comprising: a supply tank (12), a transfer pump (14) arranged and adapted to receive fluid at a suction port thereof and discharge the same through a discharge port thereof and a conduit (13) in liquid flow communication with the interior of said supply tank and the suction port of said transfer pump; a meter (17) responsive to rate of liquid flow, a conduit (15) connecting the discharge port of said transfer pump with inlet of said meter, a conduit (19) connected to outlet of said meter and terminating in a nozzle (20) adapted for insertion to the fill pipe of an automotive vehicle (21) and a shaft (24) driven by said meter in exact concordance with flow of liquid through said nozzle; a shell (34) about said nozzle terminating in an open end from which the nozzle protrudes, an outlet port from said shell remote from said open end and a check valve in said port arranged and adapted to permit flow of vapors therethrough and inhibit flow of liquids therethrough; a positive displacement vapor pump (31) driven by said shaft, arranged and adapted to transfer a volume of vapor essentially equal to volume of liquid passing through said meter, a conduit (33) connecting the inlet of said vapor pump with the outlet port of said shell, and a conduit (37) connecting discharge of said vapor pump with the interior of said supply tank.
Claim 2
Dependent Claim
260 words
A motor fuel dispensing system for supply of motor fuel to the tank of an automotive vehiCle while inhibiting discharge of hydrocarbon vapor to the atmosphere comprising: a supply tank (12), a transfer pump (14) arranged and adapted to receive fluid at a suction port thereof and discharge the same through a discharge port thereof and a conduit (13) in liquid flow communication with the interior of said supply tank and the suction port of said transfer pump; a meter (17) responsive to rate of liquid flow, a conduit (15) connecting the discharge port of said transfer pump with inlet of said meter, a conduit (19) connected to outlet of said meter and terminating in a nozzle (20) adapted for insertion to the fill pipe of an automotive vehicle (21) and a shaft (24) driven by said meter in exact concordance with flow of liquid through said nozzle; a shell (34) about said nozzle terminating in an open end from which the nozzle protrudes, an outlet port from said shell remote from said open end and a check valve in said port arranged and adapted to permit flow of vapors therethrough and inhibit flow of liquids therethrough; a positive displacement vapor pump (31) driven by said shaft, arranged and adapted to transfer a volume of vapor essentially equal to volume of liquid passing through said meter, a conduit (33) connecting the inlet of said vapor pump with the outlet port of said shell, and a conduit (37) connecting discharge of said vapor pump with the interior of said supply tank.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-07-29 | 1978-01-28 | 1978-07-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-07-29 | 1982-01-28 | 1982-07-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-07-29 | 1986-01-28 | 1986-07-30 | $7700.00 | Window Closed / Lapsed |